SPOILERS and RUMORS
Rumors of the sixth usually come around the time the new sentai premiere. This is the first Sixth Ranger rumor from Dukemon22. It is that there will be a Sixth Ranger and it will be KyoryuGold. But take this rumor as a grain of salt. Torin (the mentor) will transform using JyuDenChi #6, Pteragoudon (Pteradon), becoming the Tsubasa no Yuusha, KyouryuGold! Also, someone has claimed to see the new toy catalog. Dukemon22's theory is that Torin is like DekaMaster and there might be another Kyoryuger. There is so far 23 batteries, maybe there will be way more.